The life span of the data saved to a session is, at most, from the moment the user accesses a domain to the moment when a user times out after a preset amount of time of inactivity.
保存在会话中的数据的生命期，最长是从用户访问域的那一刻到用户在预设的一段不活动时间之后超时的那一刻。
Whereas entity beans rose quickly to prominence and then fell just as quickly out of favor, the popular acceptance of session beans and JDBC has been accumulating slowly and steadily over time.
在实体bean很快脱颖而出又很快失宠的时候，对会话bean和JDBC的接受程度却随着时间的推移缓慢而稳定地积累起来。
If the user spends too much time interacting within the iFrame, the portal session can time out, depending on the timeout value set for the portal server session.
如果用户花费太多的时间在iF rame内进行交互，门户会话可能会超时，具体取决于为门户服务器会话设置的超时值。
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